Ecology Answers

As a general rule of thumb as the size of a natural area increases..?
A. The biodiversity in that area increases
B. The number of organisms that will become extinct increases
C. The population sizes of organisms In that area decrease
D. The populations of organisms living in the area stabilize

A group of citizens concerned with the environment cost of modern agriculture decides to take a proactive step. Instead of legislation and bureaucracy aimed at farmers, they decide to focus on the consumer end of the problem with an educational curriculum aimed at high school students. Which should they include in the curriculum? A. Increasing funding for the development of more effective pesticides. B. Reimbursing farmers for using integrated pest management. C. Rezoning land to move agriculture further from cities. D. Changing the food buying habits and attitudes of the public

The urban heat island effect is due to..?
A. The low reflectance of asphalt pavement and most building materials as well as heat generated by cars and other machinery.
B. The deliberate settlement and location of most cities in low latitudes that result in warm urban land masses.
C. The low absorbance of asphalt pavement and most building materials as well as heat generated by cars and other machinery.
D. The coincidental location of most cities near geographic features that warm the urban landmasse.

Banana is an agricultural crop that is reproduced by cloning. Which if the following statements best explains why banana crops are so vulnerable to devastating epidemics of pathogenic fungi and other pests? A. Banana plant clones are all the same genetically, so a disease strain that can attack one plant can attack all the plants in the crop B. Clones are more likely to acquire genetic mutations that make them susceptible to disease. C. Banana plants grow in the tropics, which contain a higher diversity of plant diseases. D. Banana plants have lowered fitness due to a greater frequency of homozygous deleterious recessive alleles.

i am having trouble with a lab due tomorrow!:
If the European P. destructans is causing WNS in North America, how come European bats aren’t dying from the same disease?

Suppose we conduct a study on a rodent species over an area of 120 ha (1 ha = 10,000 m2). It is found that rodents live only in scattered areas represent a quarter of the area of the region. It captures a first sample of 200 individuals, there brand and they are released. Later, capture a second sample of 200 individuals. It is then found that 20% of the animals of the first sample were recaptured. (Answer the following questions by showing your calculations.)

to. Using these data, estimates the size of the total population.

b. What is the density of the population of rodents (in per hectare)?

c. What is the mode of distribution of rodents?